Freet now has four production lines for casing specially used by petroleum, with an annual capacity of 200, 000tons. freetqd (at) gmail (dot) com for more details. casing size OD from 4 1/2"--20" by ...Keyword : Casing Pipe | Pipe and Tube

Its material is stainless steel, the,formation is special bridge design It use steel punching technology, we use the high advanced machine to make the bridge slot. The slot can change according to the ...